lib.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Theme cerulean lib.
 *
 * @package    theme_cerulean
 * @copyright  2014 Bas Brands
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

function theme_cerulean_process_css($css, $theme) {

    // Set the background image for the logo.
    $logo = $theme->setting_file_url('logo', 'logo');
    $css = theme_cerulean_set_logo($css, $logo);

    // Set custom CSS.
    if (!empty($theme->settings->customcss)) {
        $customcss = $theme->settings->customcss;
    } else {
        $customcss = null;
    }
    $css = theme_cerulean_set_customcss($css, $customcss);

    return $css;
}


function theme_cerulean_set_logo($css, $logo) {
    $logotag = '[[setting:logo]]';
    $logoheight = '[[logoheight]]';
    $logowidth = '[[logowidth]]';
    $logodisplay = '[[logodisplay]]';
    $width = '0';
    $height = '0';
    $display = 'none';
    $replacement = $logo;
    if (is_null($replacement)) {
        $replacement = '';
    } else {
        $dimensions = getimagesize('http:'.$logo);
        $width = $dimensions[0] . 'px';
        $height = $dimensions[1] . 'px';
        $display = 'block';
    }
    $css = str_replace($logotag, $replacement, $css);
    $css = str_replace($logoheight, $height, $css);
    $css = str_replace($logowidth, $width, $css);
    $css = str_replace($logodisplay, $display, $css);

    return $css;
}

/**
 * Serves any files associated with the theme settings.
 *
 * @param stdClass $course
 * @param stdClass $cm
 * @param context $context
 * @param string $filearea
 * @param array $args
 * @param bool $forcedownload
 * @param array $options
 * @return bool
 */
function theme_cerulean_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options = array()) {
    if ($context->contextlevel == CONTEXT_SYSTEM && ($filearea === 'logo')) {
        $theme = theme_config::load('cerulean');
        return $theme->setting_file_serve($filearea, $args, $forcedownload, $options);
    } else {
        send_file_not_found();
    }
}

/**
 * Adds any custom CSS to the CSS before it is cached.
 *
 * @param string $css The original CSS.
 * @param string $customcss The custom CSS to add.
 * @return string The CSS which now contains our custom CSS.
 */
function theme_cerulean_set_customcss($css, $customcss) {
    $tag = '[[setting:customcss]]';
    $replacement = $customcss;
    if (is_null($replacement)) {
        $replacement = '';
    }

    $css = str_replace($tag, $replacement, $css);

    return $css;
}